Heater for shaping eyeglass frames



Patented Aug. 18, 1925.

HERMAN NEUWIRTI-I AND JACOB BERLNSTEIN, OF BROOKLYN, NEW YO'RK.

HEATER FOR SHAPINGEYEGLASS FRAMES.

Application led December To all whom t may concern:

Be it known that we, HERMAN NEUWIRTH andiJAC'oBTBnRNsTmN, citizens of the United States, and residents of the borough of Brooklyn, in the city and State of New Yorlc-havejointly invented certain new and useful Improvements in Heaters for Shaping Eyeglass Frames, of which the following is a specification.

It .is common: practice for Opticians to reshape or re-size spectacle frames of the com position type, made of celluloid or similar material, in order to make the apertures in the frame tit some particular lens. Devices have been made for heating and shaping, or sizing,.these frames and our present inventionirelates to devices of this character. One object of our invention is to provide means for utilizing` the heat generated bythe heating. element, which latter is of the electrical type, sothat the heat is used in a most etlicient manner and the major portion of this heat is concentrated upon the conical mandrel on which the eye glass frame is heated and shaped. For this purpose We use a relle'ctor arranged below the source of heat and insuch position that it concentrates the heat on the inner surface of the conical mandrel. Another object of our invention is to prevent, as far as possible, the heat from passing down to the base of the device in order that the base maybe handled without burning the handsand in order that the'heat will not reach the desk or table on which the device isplaced. Our invention is adapted to be used with electrical means for heating, and the heating unit may consist of resistance wire mounted on ay suitable support or it may consist of an incandescent lamp, both forms being illustrated in the drawing.

In the drawing forming part of this applica-tion,

Figure 1 is an elevation of our improved device,

Figure 2 is a vertical sectional View taken on the line 2 2 of Figure l showing an incandescent lamp as the heating member,

Figure 3 is a similar view showing resistance wire mounted on a support as the heating member, and

Figure 1- is a diagrammatic view illuse trating the* reflecting action of the reflector.

In the drawing, we have shown a base l which may beV made o f metal or other materialy and it is preferably made quite heavy to 13, 1923. Serial No. 680,315,

prevent ther device from tipping over easily; and on the bottom. of this base are arranged feet 2` of nonconducting material, such as Afibre. rFhe cable 3, connected with any` source ort electricalf supply such as a light- 50 ing' circuit, leads into the base at 4 land is connected with the heating member as will be hereinafter explained. Upoir the top surface ofthe base l: there is arranged a plate :3 of heat insulating material suchi as a pad G5 of asbestos, and secured upon this pad is the lower member 6 of the heating` device. This is shown in the general' form of'a bell although the shape may be varied as desii-ed;` and we have shown a series of aper- 70 tures Z in the lower portion of this bell for the purpose of permitting heat within the aell to escape and to permit cooll air to enter in order that the bell may be maintained at a low enough temperature to permit it to topf olf the mandrel there is an inwardly eX- 35 tending flange y11 slightly below thetoped'ge of the mandrel and if desired a removable cover 12 may be seated on this flange to close theV top of the mandrel and retain most of they heat therein. work it may be desirable to remove this cover and to hold a portion of the spectacle frame over the open end of the mandrel to subject it to the lieat flowing out of this open end. ln most cases where the frame is 95 being re-shaped or 11e-sized: at the lens openings the cover 12 will be seated on the flange 11v as shown 1n Figures 2 and 3.

The conical mandrel is hollow so that it forms a heat chamber 13 wherein the heat 100 generated by the heating member is applied tothe inner surface of the mandrel. In Figure 2 we have shown an ordinary lamp socket 14 attached tothe base 1 by means of screws 15 and resting on the pad 5. This 105 socket, which it will be understood is connected in the ordinary manner with the wires of the cable 3` is adapted to receive the base of an incandescent lamp 16 so that the lamp whenv screwed in place extends u spectacle frames are eX- so Incertain classes of lil) vertically above the Socket and within the l ell she-.perl ineinher G. liifhen the current in the circuit is turned on heat is generated by this lamp and it passen nprtlly within the chaniher f where it heats the inandrel. rlherc is a tendencye however, for seine oil' the heat to page dmi'i'iwardl,7 away troni the mandrel and if this; were permitted not only would there he a :nihetantial lons oli heat lont the, han? would hecoine over-heated and thia is prevented y the novel arr; ngeinent herein Shown. For this inirpoa we hare arranged a reflector l? resting; upon the socket ll; and extending ngiwardlifv around the` lani'i '1G to the hottoin edge ofthe conical inanlrel Si lllhile this refle :tor ina); take ani,VT leeired Shape we have found that the shane illnstratecl diag'annnatiealli7 in Figure '1 willwieenre the nicet eiliicient reflection or the heat anon the inner sin ,wee of the inandrel. n llilojnre l we hare shown the action oi. this reflector nnen the heat generated the incancleecent lainn. laf-mining the center oit the gireneration of heat to he at the point lil the heat waves striking' the Snrltaee of the reflector will lie reflected in the inarff ner indicated hy the arrows. lt will he ai parent that moet oli the heat which wonld otlierwiee pas@ downwardlj/7 to the heee, ie. reflected upwardly and against the inner enr'face in the rnandrel S. Only approzimately ten per cent of the heat will he reflected at anch an angle sie to strike the cover l2 or to paas ont directly in caae the corel' is net nsed lilith the reflector thne ranged nioet ol' the heat gjei erated hy' the heating; ineinlier passes np directlyr 'from the latter to the mandrel or reflefrzted there hf: the reflector, so that inain'nnn heating' effect nnen the mandrel iS olitained with anyr given heating; ineinher.

ln :(nre we have illnstrated a heating ineinlier consisting' ot a Sheet ll) off niiea having' anertini'es 2,0 'therein and resif-anee wire in the Yforni ot a continnons coil 2l is threrjided through theee apertures and over the ton edge el the sheet ot iniea`r the terininale ot this coil ot wire heine: connected to the plngr ineinhers 'fastened to the lower ed ee ot the inica Sheet. These plnggj ineinhers ara adapted to Slide over the contact ineinhere which are bolted to the, insnlating plates Qflarranged ahove and below the hottoin of the reflector; the plates 24,- liein held in position by screws entering the hase l. The wires of the eahle 3 are connected to the lower ende o'f these Contact inei'nhere The operation ot' this torni o'lE heater will he the saine or einiilar to the action oit the lainp in llie'nre eff ept tor the lrnown difference between this torni ot heater and the lainp. The action oil' the reflector will correspond with the action oit the reflector in Figure 2 and except for the torni of the heater and the method of inoniiit.ingl it the 1. A the heater it is placed on the e e er, t( ,7) c oi o i lei o ippoA ano ic epee l t l L iS posirionee over the inani'lrel passes later through the lens einem i l the Spectacle :l aine and the latter ia` then j aeed downwJJrfelli7 on the n'iaiidrel. The fginie ia Snlijiected to the heating' zco fh' mandrel and if it is pre'eed light- :c the Jfran'ie will he expanded neen expanded sulA lrentlj' ze particular site of lem; after i tra i ie rein ved and it may he ed in water to harden it. This one 'ais repented tor the other lens ineinher le Spectacle traine.

win-1' descrihed our invention what we Mire noi against the inner L ,Y o; ineinher inonnl'ed lielow Said onen ein; of the n'ianflrel7 and a reflector snrid heating n'ieinlier helow the adapted to reflect the heat rarer ire/ri Said heating); nieinlfer upwardly' and i nat the inner surface of Said mandrel.

o fr device of the, clase deecrihed compriaa liee,` a hollown conical inandrel and ,e 'for supporti the n'iandrel on the linee Said mandrel having? an open lower end. a heating# ineinher inonnted helow Said onen end of the flrel, and a reflector Snr- ,4 inen'ilier helow the i adapted to reflect the heat rara from eaie. hezxiiig; nienilier npwardli' and against the 'hiner eiii'tace o'l Said mandrel Qaid n'iandrel ai Said reflector toi-ming a elianher enclosing; l ie heating; ineinher.V

4l. It device of the claas deeerihed comprisi liaaen hollow7 conical mandrel and Afor ei'iiinortinp; the inandrel on the han@ Said inandrol liavinoj onen ends, a hoatine; ineinher 'noiinted lelow the lower end ronndinfif f :e el and or me i-,i'iandrel1r a reflector surroundingI said hea ne; ineinhei helow the inandrel and adirnteil to reflect the heat rays 'troni Said lNew lorlct this @lat day oif lloveinher. 192B.

l-fllfllllftllf NEWIRTH.

JACO

lili 

